Booster seat with back



FIG. 1 is a perspective view of a booster seat with back showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is another perspective view thereof, shown attached to a dental chair;

FIG. 9 is another right side view thereof, shown attached to a dental chair;

FIG. 10 is a perspective view thereof, shown in a reclined position;

FIG. 11 is a front elevation view thereof;

FIG. 12 is a rear elevation view thereof;

FIG. 13 is a left side elevation view thereof;

FIG. 14 is a right side elevation view thereof;

FIG. 15 is a top plan view thereof;

FIG. 16 is a bottom plan view thereof;

FIG. 17 is another perspective view thereof, shown attached to a dental chair; and,

FIG. 18 is another right side view thereof, shown attached to a dental chair.

The broken lines showing a dental chair in FIGS. 8-9 and 17-18 are directed to unclaimed environment. The dash-dot-dash broken lines represent a boundary of the claimed design. All other broken lines are directed to unclaimed features. The broken lines form no part of the claimed design. 

CLAIM The ornamental design for a booster seat with back, as shown and described. 